City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#8041
Sebree
County, KY
76 B
#8042 Sesser
County, IL
76 B
#8043 Seville
County, OH
76 B
#8044 Sidney
County, OH
76 B
#8045 Silverton
County, CO
76 B
#8046 Somerville
County, MA
76 B
#8047 St Anne
County, IL
76 B
#8048 St Marys
County, OH
76 B
#8049 State Farm
County, VA
76 B
#8050 Sterling
County, CO
76 B
#8051 Strasburg
County, VA
76 B
#8052 Sturbridge
County, MA
76 B
#8053 Sussex
County, WI
76 B
#8054 Titusville
County, PA
76 B
#8055 Tonkawa
County, OK
76 B
#8056 Trenton
County, IL
76 B
#8057 Troy
County, NH
76 B
#8058 Tryon
County, NC
76 B
#8059 Tupelo
County, MS
76 B
#8060 Umatilla
County, FL
76 B
#8061 Utica
County, OH
76 B
#8062 Valley Springs
County, AR
76 B
#8063 Vardaman
County, MS
76 B
#8064 Vaughan
County, MS
76 B
Frequently Asked Questions
How are city water quality rankings calculated?
WaterQ city rankings are based on EPA SDWIS data across local public water systems, including contaminant detections, compliance violations, and recency-weighted score signals.
Can I compare two US cities directly?
Yes. Use the city comparison links on this page or open the Compare tool to evaluate two cities side by side on score, grade, and water system coverage.
How often does WaterQ refresh city data?
City-level metrics refresh when new EPA data is processed. Check city pages for latest score and violation context.